Fair Value Measurements-Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Millions	May. 31, 2015	Nov. 30, 2014	May. 31, 2014
Liabilities [Abstract]
Business Combination, Contingent Consideration, Liability	$ 26.0
Recurring [Member]
Assets [Abstract]
Cash and cash equivalents	89.5	$ 77.3	$ 81.4
Insurance contracts	107.1	104.5	96.5
Bonds & other long-term investments	7.9	8.5	12.6
Interest rate derivatives	5.9	7.4	9.8
Foreign currency derivatives	6.0	4.9	0.8
Total assets	216.4	202.6	201.1
Liabilities [Abstract]
Foreign currency derivatives	2.1	1.4	1.4
Business Combination, Contingent Consideration, Liability	26.0
Other Liabilities, Fair Value Disclosure	28.1
Recurring [Member] | Level 1 [Member]
Assets [Abstract]
Cash and cash equivalents	89.5	77.3	81.4
Insurance contracts	0.0	0.0	0.0
Bonds & other long-term investments	7.9	8.5	12.6
Interest rate derivatives	0.0	0.0	0.0
Foreign currency derivatives	0.0	0.0	0.0
Total assets	97.4	85.8	94.0
Liabilities [Abstract]
Foreign currency derivatives	0.0	0.0	0.0
Other Liabilities, Fair Value Disclosure	0.0
Recurring [Member] | Level 2 [Member]
Assets [Abstract]
Cash and cash equivalents	0.0	0.0	0.0
Insurance contracts	107.1	104.5	96.5
Bonds & other long-term investments	0.0	0.0	0.0
Interest rate derivatives	5.9	7.4	9.8
Foreign currency derivatives	6.0	4.9	0.8
Total assets	119.0	116.8	107.1
Liabilities [Abstract]
Foreign currency derivatives	2.1	1.4	1.4
Other Liabilities, Fair Value Disclosure	2.1
Recurring [Member] | Level 3 [Member]
Assets [Abstract]
Cash and cash equivalents	0.0	0.0	0.0
Insurance contracts	0.0	0.0	0.0
Bonds & other long-term investments	0.0	0.0	0.0
Interest rate derivatives	0.0	0.0	0.0
Foreign currency derivatives	0.0	0.0	0.0
Total assets	0.0	0.0	0.0
Liabilities [Abstract]
Foreign currency derivatives	0.0	$ 0.0	$ 0.0
Business Combination, Contingent Consideration, Liability	26.0
Other Liabilities, Fair Value Disclosure	$ 26.0